From 9c552128a7e7c95bf4bcb25418193dcd1736eed3 Mon Sep 17 00:00:00 2001
From: ziyue <1213642868@qq.com>
Date: Tue, 6 Apr 2021 18:29:14 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8Dsdp=E4=B8=AD=E6=B2=A1ssrc?=
 =?UTF-8?q?=E6=97=B6=E8=A7=A6=E5=8F=91=E7=9A=84bug?=
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---
 webrtc/Sdp.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/webrtc/Sdp.cpp b/webrtc/Sdp.cpp
index b25eabb4..8951e0ee 100644
--- a/webrtc/Sdp.cpp
+++ b/webrtc/Sdp.cpp
@@ -841,7 +841,9 @@ void RtcSession::loadFrom(const string &str, bool check) {
             if (rtc_ssrc_map.size() > 1) {
                 throw std::invalid_argument("sdp中不存在a=ssrc-group:FID字段,但是ssrc却有多个");
             }
-            ssrc_rtp = rtc_ssrc_map.begin()->second.ssrc;
+            if (rtc_ssrc_map.size() == 1) {
+                ssrc_rtp = rtc_ssrc_map.begin()->second.ssrc;
+            }
         }
         for (auto &pr : rtc_ssrc_map) {
             auto &rtc_ssrc = pr.second;
@@ -982,6 +984,7 @@ string RtcSession::toRtspSdp() const{
         }
     }
 
+    copy.session_name = "zlmediakit rtsp stream from webrtc";
     auto sdp = copy.toRtcSessionSdp();
     toRtsp(sdp->items);
     int i = 0;